[1]杨 勇,王 婷,陈 伟,等.预应力钢带加固震后混凝土框架抗震性能试验研究[J].西安建筑科技大学学报：自然版,2016,48(01):29-35.[doi:10.15986/j.1006-7930.2016.01.005]
　YANG Yong,WANG Ting,CHEN Wei,et al.Experimental study on seismic performance of post-earthquake reinforced concrete frame structure retrofitted by prestressing steel strips[J].J.Xi’an Univ. of Arch. & Tech.：Natural Science Edition,2016,48(01):29-35.[doi:10.15986/j.1006-7930.2016.01.005]
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预应力钢带加固震后混凝土框架抗震性能试验研究()
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西安建筑科技大学学报：自然版[ISSN:1006-7930/CN:61-1295/TU]

卷:
48
期数:
2016年01期
页码:
29-35
栏目:
出版日期:
2016-02-28

文章信息/Info

Title:
Experimental study on seismic performance of post-earthquake reinforced concrete frame structure retrofitted by prestressing steel strips
文章编号:
1006-7930(2016)01-0029-07
作者:
 杨 勇; 王 婷; 陈 伟; 刘如月; 伊波松; 马晨光
西安建筑科技大学土木工程学院，陕西 西安 710055
Author(s):
 YANG Yong;  WANG Ting;  CHEN Wei;  LIU Ruyue;  YI Bosong;  MA Chenguang
School of Civil Engineering, Xi′an Univ. of Arch. & Tech., Xi′an 710055, China
关键词:
钢筋混凝土框架; 预应力钢带; 震后加固方法; 抗震性能
Keywords:
 ; reinforced concrete frame;  prestressing steel strips;  post-earthquake structure retrofitted methods;  seismic performance
分类号:
TU398
DOI:
10.15986/j.1006-7930.2016.01.005
文献标志码:
A
摘要:
提出采用预应力钢带加固技术对处于“可修”性能水准状态的钢筋混凝土框架进行快速抢救加固，以有效提高历经大震的混凝土框架抵抗余震的能力，并为震后全面加固提供条件．首先对一榀三层单跨1:2比例的钢筋混凝土框架进行低周反复拟静力试验，并加载至试件承载能力下降至极限荷载的85%时停止试验．然后采用预应力钢带加固技术对该框架试件的柱端、梁端和节点核心区进行加固，并重新进行低周反复拟静力，以考察加固后框架试件的抗震性能．通过详细对比加固前试件和加固后试件的承载能力、刚度、延性、层间位移角、耗能能力等性能指标，发现采用预应力钢带加固的震后框架试件基本上能达到震前框架的抗震性能，初步表明，采用预应力钢带加固技术可以实现对震后混凝土框架的有效加固，非常适用于对震后混凝土的快速抢救加固．
Abstract:
In order to improve the reinforced concrete frame’s resistance ability of aftershocks and provide conditions for comprehensive post-earthquake strengthening, the strengthening technology with prestressing steel strips was adopted to retrofit reinforced concrete frame that remains stable and erect under strong earthquakes. In this paper, low-cyclic pseudo static test of the reinforced concrete frame with single span and three stories was conducted and was halted when the specimen’s carrying capacity decreased to 85% of the ultimate load bearing capacity. Then, the prestressing steel strips reitrofitted technology was adopted to retrofit the beam end, the column end and the core area of frame joints. The low-cyclic pseudo static test was conducted again in order to study the seismic performance of the frame after it was retrofitted. A series of seismic performance indexes such as the bearing capacity, stiffness, ductility and energy dissipation capacity were contrasted in details between preshock and retrofitted specimen. It can be concluded that the seismic performance of post-earthquake reinforced concrete frame which was retrofitted by prestressing steel strips was almost similar to intact specimen’s. The results showed that the post-earthquake structure retrofitted methods was suitable for strengthening post-earthquake reinforced concrete frame rapidly.

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备注/Memo

备注/Memo:
收稿日期：2015-05-11 修改稿日期：2016-01-27
基金项目：陕西省教育厅科技计划项目(14JF014)；陕西省科学技术研究计划项目(2011kjxx42)；陕西省重点科技创新团队计划项目(2014kct-31)
作者简介：杨勇(1976－)，男，博士，教授，主要从事组合结构和结构抗震方面的研究．E-mail: Yyhhp2004@163.com
更新日期/Last Update: 2016-04-01